Question

JSP如何取得<input type="file"> 文件路径

Answer 1

问题补充：我使用strFile = request.getParameter("file")只能取得文件名，会发生I/O异常，提示找不到文件路径； <br />用new File(strFile).getAbsolutePath()得到了路径，但是得到的路径形式为：%Tomcat_dir%\bin\XX，XX为文件名 问题补充：<div class="quote_title">lyyf 写道</div><div class="quote_div">1.用request.getParameter(String str) <br /><input type="file" name="fileName" <br />后台用String fileName=request.getParameter("fileName")获取，试试 <br />2.直接获取服务器上的内容 <br /> FileItemFactory factory = new DiskFileItemFactory(); <br /> ServletFileUpload upload = new ServletFileUpload(factory); <br /> List<FileItem list = upload.parseRequest(request); <br />不知道对不对，希望对你有帮助 <br /> <br /> <br /> <br /></div> <br />String fileName=request.getParameter("fileName")这个我试过了只能得到文件名，浏览器我用IE9、firefox 4试过都不行；我仅仅是想获得<input type="file" name="fileName"的路径 问题补充：<div class="quote_title">maxm 写道</div><div class="quote_div">1.是以post方式提交的的吗 <br />2.有无 ：enctype= "multipart/form-data " <br />3.可以用隐藏iframe的方式</div> <br /> <br /> <br />是post提交，如果有enctype= "multipart/form-data "的话，程序就出错，运行起来没反应，我在IE6试了下，可以取得路径（不过此时我的程序能正常运行，但是有乱码出现） 问题补充：<div class="quote_title">maxm 写道</div><div class="quote_div">贴出异常信息</div> <br /> <br />Path is:F:\apache-tomcat-6.0.29\bin\log.txt（这是我使用new File(strFile).getAbsolutePath();取得的路径） <br />javax.mail.MessagingException: IOException while sending message; <br /> nested exception is: <br /> java.io.FileNotFoundException: F:\apache-tomcat-6.0.29\bin\log.txt (系统找不到指定的文件。) <br /> at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:930) <br /> at service.Mail.startSend(Mail.java:460) <br /> at org.apache.jsp.send_jsp._jspService(send_jsp.java:178) <br /> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) <br /> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) <br /> at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377) <br /> at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) <br /> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) <br /> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) <br /> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) <br /> at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) <br /> at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) <br /> at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) <br /> at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) <br /> at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) <br /> at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) <br /> at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) <br /> at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:861) <br /> at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579) <br /> at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1584) <br /> at java.lang.Thread.run(Unknown Source) <br />Caused by: java.io.FileNotFoundException: F:\apache-tomcat-6.0.29\bin\log.txt (系统找不到指定的文件。) <br /> at java.io.FileInputStream.open(Native Method) <br /> at java.io.FileInputStream.<init(Unknown Source) <br /> at javax.activation.FileDataSource.getInputStream(Unknown Source) <br /> at javax.activation.DataHandler.writeTo(Unknown Source) <br /> at javax.mail.internet.MimeBodyPart.writeTo(MimeBodyPart.java:1383) <br /> at javax.mail.internet.MimeBodyPart.writeTo(MimeBodyPart.java:852) <br /> at javax.mail.internet.MimeMultipart.writeTo(MimeMultipart.java:453) <br /> at com.sun.mail.handlers.multipart_mixed.writeTo(multipart_mixed.java:98) <br /> at javax.activation.ObjectDataContentHandler.writeTo(Unknown Source) <br /> at javax.activation.DataHandler.writeTo(Unknown Source) <br /> at javax.mail.internet.MimeBodyPart.writeTo(MimeBodyPart.java:1383) <br /> at javax.mail.internet.MimeMessage.writeTo(MimeMessage.java:1743) <br /> at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:888) <br /> ... 20 more <br />java.io.FileNotFoundException: F:\apache-tomcat-6.0.29\bin\log.txt (系统找不到指定的文件。) <br /> at java.io.FileInputStream.open(Native Method) <br /> at java.io.FileInputStream.<init(Unknown Source) <br /> at javax.activation.FileDataSource.getInputStream(Unknown Source) <br /> at javax.activation.DataHandler.writeTo(Unknown Source) <br /> at javax.mail.internet.MimeBodyPart.writeTo(MimeBodyPart.java:1383) <br /> at javax.mail.internet.MimeBodyPart.writeTo(MimeBodyPart.java:852) <br /> at javax.mail.internet.MimeMultipart.writeTo(MimeMultipart.java:453) <br /> at com.sun.mail.handlers.multipart_mixed.writeTo(multipart_mixed.java:98) <br /> at javax.activation.ObjectDataContentHandler.writeTo(Unknown Source) <br /> at javax.activation.DataHandler.writeTo(Unknown Source) <br /> at javax.mail.internet.MimeBodyPart.writeTo(MimeBodyPart.java:1383) <br /> at javax.mail.internet.MimeMessage.writeTo(MimeMessage.java:1743) <br /> at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:888) <br /> at service.Mail.startSend(Mail.java:460) <br /> at org.apache.jsp.send_jsp._jspService(send_jsp.java:178) <br /> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) <br /> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) <br /> at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377) <br /> at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) <br /> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) <br /> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) <br /> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) <br /> at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) <br /> at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) <br /> at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) <br /> at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) <br /> at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) <br /> at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) <br /> at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) <br /> at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:861) <br /> at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579) <br /> at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1584) <br /> at java.lang.Thread.run(Unknown Source) <br />

Answer 2

JSP取得<input type="file"> 文件路径方式如下：
1.用request.getParameter(String str)
<input type="file" name="fileName">
后台用String fileName=request.getParameter("fileName")获取，试试
2.直接获取服务器上的内容
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List<FileItem> list = upload.parseRequest(request);